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Citation: FENG Yu-Ying, GU Xiao-Tian, ZHOU Jia-Hong, YAO Jie, MO Xiang-Yin, BAO Jian-Chun. Photoluminescence Properties of Silica Glass Doped with Germanium[J]. Chinese Journal of Applied Chemistry, ;2005, 22(8): 926-928. shu

Photoluminescence Properties of Silica Glass Doped with Germanium

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a Analysis and Testing Center, Laboratory of Materials Science;
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b School of Chemistry and Environment Science, Nanjing Normal University, Nanjing 210097

Corresponding author: FENG Yu-Ying,
Received Date: 19 October 2004
Available Online: 20 December 2004
Fund Project: 江苏省教育厅自然科学基金(04KJD150110和04KJB150068) (04KJD150110和04KJB150068)南京师范大学优秀高层次人才基金(2004191XGQ2B43)资助项目 (2004191XGQ2B43)

SiO₂ glassy materials with Ge crystals embedded were formed by heating GeO₂/SiO₂ glass at 700℃ in the presence of hydrogen.GeO₂/SiO₂ glass was prepared with the sol-gel technique.The Ge/SiO₂ samples show a special photoluminescence property and exhibit strong luminescence at 392 nm (3.12 eV),secondary strong luminescence at 600 nm (2.05 eV) and weak luminescence at 770 nm (1.60 eV) when excited under 246 nm (5.01 eV) ultra-violet light at room temperature.The structure of this new luminescence material was studied with XRD,XPS,and TEM.The results show that the presence of nanometer sized (around 10 nm) Ge and GeO crystals in the SiO₂ may cause the three-band photoluminescence.The GeO₂/SiO₂ glass without going through the reducing process only has GeO₂ in the SiO₂ glass,and does not show the photo-luminescence.
- Ge/SiO₂ glass,
- nanosized Ge crystal,
- sol-gel,
- photoluminescence
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